Ubisoft has said that the new features showcased in the Rayman Legends trailer don't represent the final game. According to the publisher, this video was designed to be seen by internal production teams who create game prototypes with work in progress development kits.
The Rayman Legends trailer excited many Nintendo fans as it appeared to show off new features, as players used the toughscreen to move platforms in a multiplayer game before placing Rabbids and an Assassin's Creed character on the screen to bring them to life in the game.
However, this was just a demonstration of what the game could do rather than what will be in the final game. A Ubisoft's statement reads: "An internal video showing images of Rayman Origins' sequel has leaked over the Internet. This video was intended as a purely internal demonstrative video, and in NO way represents the final game, the final console or their features. This video was destined for internal production teams who often create game prototypes with work in progress development kits. Ubisoft confirms the development of Rayman Legends handled by Michel Ancel and his team in Montpellier."
Still, at least it seems that Rayman Legends is coming to Wii U and we didn't know that before today.